Mechanism for superimposing sheets of paper



Jan. 27, 1931.

P. J. CHRISTMAN, JR v 1,789,965 MECHANISM FOR SUPERIMPOSING SHEETS OF PAPER Filed June 12, 1929 2 Sheets-Sheet l In r zor Pete/f 0/2/15?" mnj:

Jan. 27, J STMAN JR MECHANISM FOR SUPERIMPOSING SHEETS OF PAPER Filed June 12, 1929 2 Shee tSSheet 2 Pefer 45 74 Patented Jan. 27, 1931 PATENT OFFICE.

PETER J. CHRISTIAN, 3a., or GREEN BAY, WISCONSIN MECHANISM roasurnramrosme exams or mun Application filed June 12,

This invention pertains to a mechanism for superimposing sheets of paper incidental to subsequent folding or interfolding operations now in common practice.

The primary object of the invention resides in the provision of a simple and eflicient' mechanism which will rapidly and positively superim pose or overlap successive sheets of paper a predetermined distance essential: to subsequent folding operation.

Incidental to the foregoing, a more specific object resides in the provision of a mechanism in which reciprocative parts and tuckers are entirely eliminated, thus materially increasing the rate of production, and sim plifying the mechanism.

With the above and other objects in view, which will appear as the description proceeds, the invention resides in the novel construction, combination and arrangement of parts substantially as hereinafter described and more particularly defined by the appended claims, it being understood that such changes in the precise embodiment of the herein disclosed invention may be made as come within the scope of the claims.

In the accompanying drawings is illustrated one complete example of the physical embodiment of the present invention constructed according to the best mode so far devised for the practical application of the principles thereof.

In the drawings, Figure 1 is a fragmentary plan view of a portion of a machine embodymg the present invention;

Fi re 2 is a longitudinal section taken on the hue 22 of Figure 1;

Figure 3 is a detail fragmentary section of the lapping roll, and particularly the impinging mechanism and Figure 4 is an elevation of the same.

Referring now more particularly to the accompanying drawings, the numeral 1 designates a side frame'upon which the various mechanisms are supported, it being understood that in the full machine two such frames are employed.

Mounted upon the side frames are a plurality of transverse braces 2 which carry supporting strips 3 upon which the sheets of 1929. Serial in. 370,211.

the manner hereinafter destock into sheets. F min the cutter rolls, the

severed sheets are picked up by a series of driven feed rolls 7 which feed the severed sheets to the lapping rolls 8 and 9, respectively.

During the feeding operation of the severed sheets, the same'are guided upon the supporting strips by the guide bars 10 carried by the transverse braces 11 which in turn are also mounted upon the side frames 1. From the feed rolls 7 the severed sheets enter the lappmg rolls 8 and 9, the roll 8 being provided with a plurality of longitudinally spaced impinging needles 12 carried by the studs 13 threaded into the periphery of the roll 8 to permit replacement of the needles when necessary. The lower or bed roll 9 is provided with a longitudinal recess 14 in which is positioned a. resilient strip of material 15 that cooperates with the impinging needles 12 to permit the latter to enter the paper in the conventional manner.

From the foregoing, it will be readily seen that as the severed sheets of paper Y, indicated by dotted lines in Figure 2, pass through the lapping rolls. The rolls are so timed that the rear edge of the sheet will be impinged upon the needles 12 after which the rear edge is raised to permit the succeeding sheet to be fed forwardly beneath the same.

Inasmuch as the feed rolls 7 are driven at a greater speed than the lapping rolls, the same will feed the succeeding sheet forwardly, during the lifting operation of the preceding sheet, asuflicient distance to obtain the desired amount of overlap,'it being understood that sufiicient space is provided between the ,rolls 8 and9 to allow the sheets to be fedthrough the same at any desiredspeed. Obviously, the distance of overlap can be regulated by the speed of the feed or booster rolls 7.

' s As the superimposed sheets Y leave the -carried upon the transverse braces 18 and terminating at their rear ends closely adja-' cent the lapping roll 8, serve to strip the rear edge of the sheets Y from the impinging needles 12 afterthe sheets have been raised a suflicient distance to permit the overlapping operation of the successive sheets. From the rolls 16, the overlapped or superim 'osed sheets may be fed to any desired fo ding mechanism. 2

While the drive for the various rolls may be obtained in any suitable manner, for the edw purpose of illustration, it may be ass that the shaft 19 is driven, and throug the bevel gears 20 rotarymovement is imparted to the roll 9, which through the gear connec-- tion 21, drives the lap in roll 8, and the gear 22 meshing with t e ower gear 21 actuates the shaft 23, which through the ar train 24 drives the booster or feed rolls A shaft 25, connected thru the bevel gears 20, serves to impart movement to the cutting rolls 4 and the rear feed rolls 7, in a manner similar to that described in connection with the lapping and boosterrolls.

While the source of power for the retarding rolls 16 has not been illustrated, obviously the same may be taken off from the subsequent folding mechanism (not shown), through the gear train 26, it bein understood that the gear ratio provide is such that the rolls 16 are driven at a slower rate of speed than the lapping rolls, as previously described.

From the foregoing, it will be quite apparent that a very simple and positive mechanism has'been provided, which will effect an orderly overlapping or superimposing of successive severed sheets of paper, and that the distance of overlapping desired may be readily obtained by merely varying the speed of the booster or feed rolls which effect the overlapping operation, as the lapping rolls raise t e preceding sheet.

sheets of paper comprising means for supporting the sheets, rotary means for impinging the rear end of each sheet and raisin the same out of the path of the succeeding s eet, and means for feeding the forward end of the succeeding sheet into su erimposed relation with the rear end of sai preceding sheet.

3. A mechanism for superimposing severed sheets of paper comprising means for supporting the sheets, rotary means for impinging the rear end of each sheet and raisin the same out of the path of the succeeding s eet, means for feeding the forward end of the succeeding sheet into superimposed relation with therear end of said preceding sheet, and means for retarding travel of the superimposed sheets.

4. A mechanism for superimposingsevered sheets of pa r comprismg means for supporting the s eets, rotary means for impinging the rear end of said sheet and raisin the same out of the path of the preceding s eet, means for feeding the forward end of the succeeding sheet into superim osed relation with the rear end of said prece 'ng sheet, and rolls for retarding travel of the superimposed sheets.

5 A mechanism for superimposing severed sheets of paper comprismg means 'for su It will also be appreciated that the maximum rate of production is provided for in that oscillating and reciprocating parts, such porting the sheets, a roll for impin 'ng t 0 rear end of each sheet and lifting t e same out of the path of travel of the succeeding sheet, means for feeding each succeeding sheet into superimposed position with the' raised end of the preceding sheet, and means for stripping said sheet from said raised roll.

6. A mechanism for superimposing severed sheets of paper comprisln means for su porting the sheets, a roll or impin 'ng t e rear end of each sheet and raising t e same out of the path of travel of the succeeding sheet, means for feeding the succeeding sheet into superimposed position with relation to the preceding sheet, means for stripping the sheets from said raising roll, and a pair of feeding rolls engaging the superimposed sheets, said feeding rolls being driven at a slower speed than said raising roll.

7. A mechanism for superimposing severed sheets of paper com rislng means for supporting the severed s eets, a pair of lapping rolls, means for feeding the severed sheets to said lapping rolls, means carried by one of said lap ing rolls for enga 'ng the rear edge of each s eet and directing t e same out of the path of travel of the succeedin sheet, and means for retarding the travel 0 said sheets while enga ed by said lapping rolls.

8. A mechanism for superimposing severed sheets of paper comprismg means for supporting the severed sheets, a pair of lapping rolls, means for feeding the severed sheets to said lapping rolls, means carried by one of said lapping rolls for engaging the rear edge of each sheet and directing the same out of the path of travel of the succeeding sheet, means for retarding the travel of said sheets While engaged by said lapping roll, and means to;- stripping said sheets fromsaid lapping r0 Is.

In testimony that I claim the foregoing I have hereunto set my hand at Green Bay, in the county of Brown and State of Wisconsin.

PETER J. CHRISTMAN, JR. 

